Rheological behaviour of aqueous colloidal suspensions during membrane filtration

Educational objectives


The purpose of this lab course is to give Master students the opportunity to discover the mechanisms involved in membrane ultrafiltration processes in relation with the rheological behaviour of the aqueous filtered suspensions.

During the filtration process under shear flow and pressure forces, the filtered particles accumulate near the membrane surface forming a concentrated layer of a few hundred micrometers. The changes from a dilute phase to a concentrated phase induce a change in the rheological behavior of the suspensions which control the performance of the process.

The proposed approach, is to combine the characterisation of the filtration properties of the suspensions, the in-situ visualisation of the accumulated layers and the rheometric behaviour of the suspensions. The goal is to understand the main mechanisms governing the ultrafiltration process used in several industrial applications e.g. bio- and agro-industries, chemical industries, pharmaceutical, nuclear, as well as water and sludge treatment.


Prerequisite


This lab-course is well suited to M1 and M2 students having a background in fluid mechanics, chemical engineering, and some knowledge on particles suspensions properties and theirs rheological behaviour.

Module 1: Mechanisms involved during membrane ultrafiltration processes


Evolution of the rheological properties of aqueous suspensions with increasing concentrations

8 hrs lab course

Teachers: Frédéric Pignon, Nicolas Hengl

Contacts


Frédéric Pignon

LRP

Nicolas Hengl

LRP

Location


This lab course is hosted in the premises of the LRP located at 363 rue de la chimie on the campus